MIL-PRF-87930B
4.2.2 Sampling tests. The propellant shall be selected according to 4.2.2.1 and subjected to the
tests indicated in Table I as described under 4.3.
4.2.2.1 Sampling plan. Unless otherwise specified (6.2), each filled shipping container shall be
considered a lot and shall be sampled.
4.2.2.1.1 Sample. A sample consists of not less than 1500 mL of propellant. Unless otherwise
specified, quality conformance tests shall be made on the sample of propellant taken directly from the
shipping container. When required, the sample shall be forwarded to a laboratory designated by the
procuring activity for subjection to the quality conformance tests specified herein. The glass narrow
mouth bottles intended for sampling shall be specially cleaned and handled according to the procedure
described in ASTM D2276 Section 10 with the exception listed in 4.3.3d. The bottle must be dried with
filtered nitrogen after cleaning. The sampling of drums and other shipping containers shall be conducted
in such a manner that neither the contents of the container nor the sample is exposed to the atmosphere.
The use of a plastic bag purged with nitrogen to cover the container is mandatory.
4.2.3 Rejection. When any sample of the propellant tested in accordance with 4.3 fails to
conform to the requirements specified herein, the entire lot represented by the sample shall be rejected.
4.3 Test methods.
4.3.1 Examination of product. The propellant shall be visually examined to ensure that the
material conforms to 3.4. The examination shall be conducted after a representative aliquot of the
sample has been transferred to a clear glass vessel and compared to the same type vessel containing
the same volume of purified water.
4.3.2 Hydrazine assay and water. The hydrazine and water content of the sample shall be
determined by the Gas Chromatographic method described in Appendix A.
4.3.3 Particulate. The propellant sample shall be tested gravimetrically for particulate
contamination in accordance with ASTM D2276, with the following exceptions:
a. Mix the sample thoroughly without exposure to air. Immediately pour 1000 mL of the
sample into a clean 1000 mL graduated cylinder.
b. Pass the 1000 mL sample aliquot through a Mitex disc polytetrafluoroethylene (PTFE)
hydrophobic, 5 µm, 0.47 mm diameter, white filter or equivalent.
c.
Set the oven temperature to 70°C (158°F).
d. Filtered American Chemical Society (ACS) reagent grade isopropyl alcohol shall be used for
rinsing the sample bottle and filter holder instead of petroleum ether specified in ASTM D2276. Use a
suitable solvent resistant filter disc with an absolute rating of at least 1.0 µm. Wet the filter with the
filtered isopropyl alcohol prior to filtering the sample.
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4.3.4 Chloride. The chloride (Cl ) level shall be determined by a calibrated ion chromatograph
(EPA 300.0) or one of the methods described in Appendix B (colorimetric with mercuric thiocyanate or
+
combinations of silver nitrate and/or specific ion electrodes (Ag /AgCl)). In case of a dispute, the specific
ion electrode method (B.2.1) shall be the referee.
4.3.5 Aniline. The aniline content of the propellant shall be determined by one of the methods
found in Appendix C or the OVCM method found in Appendix G. In case of a dispute, the
spectrophotometric method (C.2.1) shall be the referee.
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